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What relation is your father's daughter's brother's son to you ?

What relation is your brother's sister's uncle's son to you ?

What relation is your aunt's niece's mother's husband to you ?

What relation is your sister's cousin's father's daughter's brother in law to you ?

What relation is your aunt's brother in law's son's father in law to you ?

What relation is your sister's cousin's uncle's son to you ?